Being outside of the city center it won't contribute too much to gentrification and probably it will help Brandenburg getting more people to live there, pay taxes, buy property, shop, etc.
So far reactions have been neutral to good, which by Berlin standards is an amazing result.
I kind of wonder if the decision of bringing the factory to Berlin wasn't based on the amount of software engineering talent that is available, more than the more traditional engineers.
In any case, I'm happy about Tesla coming to Germany, interesting times!